package com.wangyadong.hobby.schedule.jobtask.teststack;

/**
 * <p>
 *
 * @author <714037465@qq.com>
 * @since 2018/9/2519:26
 **/
public interface Stack<E> {

    E   pop();

    void push(E e);

    E top();

    int size();

    boolean isEmpty();

}
